Table 1.

Parameter Estimates for Socioeconomic Status (SES) and Verbal and Nonverbal Ability as Predictors of Latent Growth Factors (Intercept and Slope) of School Performance

	βi	SE i	p i	R 2 i	βs	SE s	p s	R 2 s
English performance
Model 1
Verbal ability	.436	.035	< .001	.463	.053	.005	.515	.028
Nonverbal ability	.431	.036	< .001		−.172	.005	.039
Model 2
Verbal ability	.402	.038	< .001	.473	−.058	.005	.504	.123
Nonverbal ability	.413	.037	< .001		−.245	.005	.004
SES	.101	.038	.031		.335	.005	< .001
Mathematics performance
Model 1
Verbal ability	.382	.035	< .001	.486	−.069	.005	.505	.005
Nonverbal ability	.502	.035	< .001		.003	.005	.980
Model 2
Verbal ability	.344	.037	.049	.492	−.203	.005	.057	.155
Nonverbal ability	.486	.036	< .001		−.083	.005	.426
SES	.097	.037	< .001		.432	.005	< .001

i = intercept; s = slope; β = standardized coefficient; SE = standard error; p = p‐value; R ² = adjusted R ².